We don't have synonyms for unaverse yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are universe, traverse and averse.
(n) :
the sum of everything that exists in the cosmos, including time and space itself; same as the Universe; an entity similar to our Universe; one component of a larger entity known as the multiverse
"in all this universe of possibilities, there is only one feasible option."
(n) :
the sum of everything that exists in the cosmos, including time and space itself; same as the Universe; an entity similar to our Universe; one component of a larger entity known as the multiverse
"in all this universe of possibilities, there is only one feasible option."